Home / 21,043.76-31,569.28-9,357.88

Finding the Fourth Proportional to 21,043.76, 31,569.28 and 9,357.88

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Solution

The fourth proportional to 21,043.76, 31,569.28 and 9,357.88 is: 14,038.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.76 : 31,569.28 = 9,357.88 : x
  2. Step 2: Convert to fraction form
    21,043.76/31,569.28 = 9,357.88/x
  3. Step 3: Cross multiply
    21,043.76x = 31,569.28 × 9,357.88
  4. Step 4: Simplify right side
    21,043.76x = 295,421,533.93
  5. Step 5: Solve for x
    x = 295,421,533.93/21,043.76
  6. Step 6: Final answer
    x = 14,038.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.